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• Performing a fuzzy search may retrieve terms with similar spellings: (( catolico university of lyon ) OR ( catolica university of lyon ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( catolico university of lyon ) OR ( catolica university of lyon ))".
• Adding a wildcard symbol may retrieve word variants: (( catolico university of lyon ) OR ( catolica university of lyon ))*.